13-nengo no Kimi

A boy who died thirteen years ago in an accident is reborn as a middle school student named Fushimi Arata. Later, a new teacher arrives at his school—Midorikawa Utako, who was his lover in his past life. The story explores this unexpected reunion through the lens of reincarnation. The work was initially published on Pixiv and later compiled by Square Enix for print, with additional chapters included. It was also serialized in Gangan Pixiv.